【作者】 陈韬；

【导师】 张齐兴；

【作者基本信息】 河海大学 ， 农业水土工程， 2007， 硕士

【摘要】 水泵装置的研究主要有整体模型试验和分解模型试验两种方法。前一种主要是为了获得水泵装置的整体性能指标，不便对水泵装置各部分性能分别进行测试和研究改进，本文采用了分解模型试验的方法对进水流道进行研究。由于泵装置是由泵段和进、出水流道组合而成的整体，泵装置效率应是反映泵效率与相应的流道效率的综合指标，水力性能优良的泵装置应由水力性能优异的水泵和设计合理、流态优良的进、出水流道组成。分解模型试验方法可分别地获取水泵装置各组成部分的性能，有利于泵装置各部分水力性能的比较和优化，进而使得水泵装置性能达到最优。 本文先对某泵站泵装置进行了物理模型能量测试，得出了模型水泵装置综合性能曲线，为进一步了解进水流道内的流态情况，开展了泵站进水流道内水流运动数值模拟试验。本文实现了泵站肘形进水流道和簸萁形进水流道的三维流场数值模拟，并在此基础上对这两种方案进行了对比。通过一定的优化目标对两方案的数值计算结果和模型试验结果进行分析和比较，选出最佳。 本文中针对泵站进水流道研究所提出的数值计算方法、选择设计方案具有普遍性，并大大地降低泵站模型试验的成本。可供其他大型泵站进水流道选择方案时时借鉴。更多还原

【Abstract】 At present.both integrate model experiment and disintegrate model experiment could be used to study pump system.The former is usually applied to get hydraulic performance. of a pump system.However,it is hard to gain and improve performance of every part,which composes pump system. so,disintegrate model experiment is used to research the inlet conduits of a pumping station.Because a pump system consists of a pump,inlet and outlet conduits,the efficiency of the pump system should be a comprehensive target including the pump efficiency and conduit efficiency.What is more,the pump system with excellent hydraulic characteristic should be contributed to by a pump with excellent hydraulic characteristic and conduits with fine flow patterns.Disintegrate model experiment is obviously convenient to compare and optimize the every part performance.In this way, the hydraulic performance of pump system could be optimized.First,physical model’s energy test of the pump system is tested,hydraulic performance curve of the model pump sysytem is got.In order to kown the hydraulic characteristic of inlet,the numerical simulation of the inlet is carried on.The papers realize the numerical simulation of 3D turbulent flow in the elbow inlet and the dustpan one.compare and analyse the two designs with the some optimum object function.Then choose the better design.The numerical simulation which is used in the papers reduce the cost of the model experiment.It is universality to choose the optimum design with this method.So it can be modeled by other pump station.更多还原